Sciweavers

1322 search results - page 4 / 265
» Parameterized counting problems
Sort
View
CSL
2007
Springer
14 years 1 months ago
Subexponential Time and Fixed-Parameter Tractability: Exploiting the Miniaturization Mapping
Recently it has been shown that the miniaturization mapping M faithfully translates subexponential parameterized complexity into (unbounded) parameterized complexity. We determine...
Yijia Chen, Jörg Flum
ESA
2010
Springer
227views Algorithms» more  ESA 2010»
13 years 8 months ago
Approximating Parameterized Convex Optimization Problems
We consider parameterized convex optimization problems over the unit simplex, that depend on one parameter. We provide a simple and efficient scheme for maintaining an -approximat...
Joachim Giesen, Martin Jaggi, Sören Laue
CJ
2008
69views more  CJ 2008»
13 years 7 months ago
Some Parameterized Problems On Digraphs
We survey results and open questions on complexity of parameterized problems on digraphs. The problems include the feedback vertex and arc set problems, induced subdigraph problem...
Gregory Gutin, Anders Yeo
STACS
2010
Springer
14 years 2 months ago
Treewidth Reduction for Constrained Separation and Bipartization Problems
We present a method for reducing the treewidth of a graph while preserving all the minimal s−t separators. This technique turns out to be very useful in the design of parameteriz...
Dániel Marx, Barry O'Sullivan, Igor Razgon
TIP
2008
89views more  TIP 2008»
13 years 7 months ago
Snakuscules
Abstract--A snakuscule (a minuscule snake) is the simplest active contour that we were able to design while keeping the quintessence of traditional snakes: an energy term governed ...
Philippe Thévenaz, Michael Unser